<template >
  <div class="app-container">

     <!-- 顶部 Header 区域-->
      <mt-header fixed title="华埔优鲜-Vue项目">
          <span slot="left" @click="goBack" v-show="flag">
              <mt-button icon="back">返回</mt-button>
          </span>
      </mt-header>


      <!-- 中间的 路由  router-view 区域-->
      <transition>
          <router-view></router-view>
      </transition>



      <!-- 底部 Tabbar 区域-->
      <nav class="mui-bar mui-bar-tab">
          <router-link class="mui-tab-item" to="/home">
              <span class="mui-icon mui-icon-home"></span>
              <span class="mui-tab-label">首页</span>
          </router-link>
          <router-link class="mui-tab-item" to="/member">
              <span class="mui-icon mui-icon-email"></span>
              <span class="mui-tab-label">会员</span>
          </router-link>
          <router-link class="mui-tab-item" to="/shopcar">
              <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
                  <span class="mui-badge" id="badge">{{ $store.getters.getAllCoount }}</span>
              </span>
              <span class="mui-tab-label">购物车</span>
          </router-link>
          <router-link class="mui-tab-item" to="/search">
              <span class="mui-icon mui-icon-search"></span>
              <span class="mui-tab-label">搜索</span>
          </router-link>
      </nav>

  </div>
</template>

<script type="text/ecmascript-6">


    export default {
        data() {
            return {
                flag: false
            };
        },
        created() {
          this.flag = this.$route.path === "/home" ? false : true;
        },
        methods: {
            //点击后退
            goBack() {
                //点击后退
                this.$router.go(-1);
            }
        },
        watch: {
            "$route.path": function (newVal) {
                if (newVal === "/home") {
                    this.flag = false
                } else {
                    this.flag = true;
                }
            }
        }

    }

</script>





<style lang="scss" scoped>

    .mint-header {
        /*提高导航栏的层级*/
        z-index: 99;
    }

   .app-container {
       /*background-color: lightgray;*/
       padding-top: 40px;
       padding-bottom: 50px;
       overflow-x: hidden;
   }

    .v-enter{
        opacity: 0;
        transform: translateX(100%);
    }

    .v-leave-to {
        opacity: 0;
        transform: translateX(-100%);
        position: absolute;
    }

    .v-enter-active,
    .v-leave-active {
        transition: all 0.5s ease;
    }


</style>

